Home / 13,411.40-20,117.16-5,625.68

Finding the Fourth Proportional to 13,411.40, 20,117.16 and 5,625.68

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Solution

The fourth proportional to 13,411.40, 20,117.16 and 5,625.68 is: 8,438.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,411.40 : 20,117.16 = 5,625.68 : x
  2. Step 2: Convert to fraction form
    13,411.40/20,117.16 = 5,625.68/x
  3. Step 3: Cross multiply
    13,411.40x = 20,117.16 × 5,625.68
  4. Step 4: Simplify right side
    13,411.40x = 113,172,604.08
  5. Step 5: Solve for x
    x = 113,172,604.08/13,411.40
  6. Step 6: Final answer
    x = 8,438.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.